Remove deprecated VS Code Codex integration

src/vite-env.d.ts

@@ -42,10 +42,6 @@ declare global {
       isPortable: () => Promise<boolean>;
       getAppConfigPath: () => Promise<string>;
       openAppConfigFolder: () => Promise<void>;
-      // VS Code settings.json 能力
-      getVSCodeSettingsStatus: () => Promise<ConfigStatus>;
-      readVSCodeSettings: () => Promise<string>;
-      writeVSCodeSettings: (content: string) => Promise<boolean>;
       // Claude 插件配置能力
       getClaudePluginStatus: () => Promise<ConfigStatus>;
       readClaudePluginConfig: () => Promise<string | null>;